Improvement in compound air-heaters and steam-condensers



B. F. STURTEVANT.

COMPOUND AIR HEATER AND STEAM CONDENSER.

Patented Feb. 22, 1870.

abated @iliiine.

B. F. STURTEVANT, OF JAMAICA PLAIN, MAS SACHUSE'ITS.

Letters Patent N 100,241, dated February 22, 1870.

IMFROVEMENT IN COMPOUND AIRHEA .TBRS AND STEAM-C"ONIDIIJII'SElRS.

'lheschedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that .I, B F. STURTEVANT, of Jamaica Plain, in 'the county of Norfolk, and State of Massze chusetts', have invented an Improvement in Air-Surface Condensers; and I do hereby declare that. the following, taken in connection with the drawings which accompany and form part of this specification, is a descripiion of my invention sutficient to enable those skilled in the art to practice it.

In that class of apparatus in which air moved rapidly under the action of a rotary blower is used to con-. steam, it is necessary that themctal used to separate the air and steam-currents should be nniide. vcuvthin, in order to conduct-heat rapidly, and it is further necessary, to give sufiicicnt strength to the metal, that it should be used in the form of small tubes, through which the steam passes, the air surrounding and passing along the outside of the tubes.

To produce the best results, it may be-desirable that the tubes should be arranged in a vertical or inclined position, instead of in a' l'iorizontal position,-as shown in niy'patcnt for blast-apparatus, dated July 13, 1869, numbered 92,4QQ, and in my patent for a.

compound air-beater andcondenser, of even date herewith, so that the water of condensation will drain rapidly from them, and not remain therein as it will in' horizontal tubes, lessening materially the effective conducting-surface of the tubes with which the steam is in contact. Y

My invention consists in the combination of a. rotary blower with a condenser made with vertical or inclined tubes, through which steam is made to pass, the tubes being incloscd in a case, and the top and bottom ends of their tubes opening out of and emptying into chambers scparate from the air-space in which the tubes are contained, one of said chambers receiving the steam from a conducting-pipe, and the other or bottom chamber receiving the water of condensation and the uncondcnsed steam, which then flow off through a. suitable conducting-pipe, when .the blower is arranged to force or to draw air rapidly through the air-space surrounding the tubes, the operation causing the steam to condense by giving npits heat to the air, which heated air may be impelled by the blower to any location for any desired purpose.

The drawings represent, in Figure 1, a vertical sectional elcvntion of my improved aia surfacc condenser, the section. being taken in the pianc of the line zz, Figure 2. I

a denotes the condenser-case, made with tube-heads 1) and air-entering and delivery nozzles c c.

Tubes (1 are secured in the tube-heads b either in a vertical or in an inclined position, with their open ends communicating with spaces made by the covering-bonucts k k'. I I

The inlet-steam pipe 0 enters the space under hon-v .nc-t k, and the ontlet pipc f proceeds from the spar-c above bonnet k, the direction oi the currents ot'stcam ahd the water of condensation being shown by the dotted arrowssccn in the sectional part of tig. 1.

'lo'the nozzle 0, an air-inlet pipe, g, is attached, and the suction-entrance of the blower his attached to the other nozzle 0, so that the action of the blower will obviously be to draw air through pipe g, and cause it to pass around the outside of the tubes 11, through nozzle 0', to and through the series otdelivcry or distributing-pipes, Z, attached to the blower-outletm.

The steam, in passing tlnongh the tubes (1, is condcnsed against the tube-surfaces, which are cooled by abstraction of heat into and by the air-current causedby the operation of the blower, and the water of condensation flows down the tubes as rapidly as it is formed, and without accumulation therein, and is conducted oti through pipe f.

It will be apparentthatthe blower may be arranged to force air through the space containing tubes (1, insturadioldrawing it through, in which case the delivery-pipes I would be attached to one of the nozzles c or c, the outlet of the blower being then attached to the other nozzle and the air-inlet pipe to the suctioneutrance of the blower.

I claim the combination'and arrangement of arotary blower and compound heater and cooler, having vertical or nearly vertical tubes for the st'cam, and transverse passages for the air,'all substantially as shown and described.

B. F. STURTEVANT. Witnesses:

J. B. Cnosm', Fmsoxs Gounn. 

